National Geographic : 1963 Jun
Author pulls a string that jiggles bait above an electric eye. Frogs break the light beam and trip the shutter of camera at right. A frog will try to swallow almost anything that moves. However, scientists have observed that the creature, when surrounded by immo bile insects, will starve rath er than strike at a still tar get. Boys catch frogs on a bit of red flannel dangled from a fishing pole. His Eyes Retracted, a Bullfrog Blasts Off After spotting his prey, the frog jumps almost blind; at other times the eyes bulge out to watch behind as well as ahead. Each year this water-to-air missile zeroes in on thousands of insects.